I have now learnt that John Alfred Harrison was on parachute course 99, which lasted from the 19th January until the 3rd February 1944. It was noted that he was a "Good Parachutist. Keen, reliable and diligent". He was a Lieutenant at the time of his course and upon successful completion, was posted to Airborne Forces Holding Unit before being transferred to 1 PARA ITC. Would "1 Para ITC" have been for 1st Parachute Brigade or 1st Parachute Battalion, or something else?